Introductions:The GT08 SIM Card GSM GPRS Smart Watch for iOS & Android Cellphone is a fully functional timepiece with GSM and GPRS functionality. With a rectangular screen, it has a sleek modern watch design as well as a clear display. Insert the SIM card and turn it into a wearable cellphone; then you can make phone calls, send text messages and do a lot more. Small and lightweight, this smart watch is integrated with pedometer, calorie calculator, walking/running distance meter, and more. Soft silicone band is comfortable for long-term wearing. Don't hesitate to bring it home now!